I don't know if this problem was already a known bug, but if you subscribe to any of the extra rim mods on the Workshop, you lose the ability to access some other rims.
For example, I am subscribed right now to six mods that add new rim styles into the game, and I cannot access the steely rim if I select another. And, if I subscribe to all of them, I can't access these:
You also are unable to use the scroll bar, as it appears to do nothing.
So, is there any workaround to this or is it an unfix-able quirk that'll be nonexistent in the Unreal version?